ESP color symbol cars, deck of 25

This is a deck of 25 Poker Size cards with the Rhine (Extra Sensory Perception) symbols printed in 5 different colors. The color symbols enable you to refer to the designs by their shape or color. Supplied in a plastic wallet, without any instructions. There are several excellent self-working tricks with ESP cards described in magic literature, and several tricks can be adapted for use with these design cards for demonstrations of mentalism.